The first step toward using FOray from within your Ant scripts is to define
the custom task within the Ant script.
It is generally desirable to define the task in a common target that is
accessible to the remainder of the script, such as an "init" target.
Defining the task simply tells Ant how to find the FOray Ant task class, and
the classes that are needed to run FOray.
In the example below, note that your location for ${foray.home} and the
classpath may be different.